Locomotive



G. M EATON AND B. E. HELLMUND.-

LOCOMOTIVE.

APPLICATION FILED DEC. 14. |916.

Patented Out. 14, i919.

2 SHEETS-SHEEY l.

INVENTOR Rudow/z E, He//m/m.

vnr. commun PLANuuuAvu co., WASHINGTQN, DI c.

G. M. EATON AND R. E. HELLMUND.

LocoMolvE.

APPLlcAnoN man DEc. 14. 191s. 1,3183'36, Y,Patented 00 v 1919.

` ATTORNEY 1 UNirED srArEs i' PArENi` oEEioE.

SYLVANIA, ASSIG-NORS TO GEoEGE M. EATON, or PITTSBURGH,ANDRUDOLF E, HELLMUND, or sWIssvALE, PENN- WEsTINGHoUsE ELECTRIC AND MANUFACTURING COMPANY, A conroRA'rIoN or PENNSYLVANIA.

To all whom t mayconcera:

lBe it known that we, GEORGE M. EA'roN,

a citizen of the United States, andl apresident oflittsburglnin the county of Alle-` gheny and State of Pennsylvaniaand RU- D OLE E. HELLMUND, a. subject of thev Ger- A Pennsylvania, have invented anew and useful Improvement in Locomotives, of whichV man Emperor, and a resident of Swissvale,k

in the county of Allegheny and State of the following is a specification.

Our 'inventionrelates to locomotives and ,particularly to electric locomotives having rod connectingmeans between the propelling motors and the driving wheels.

One object of our invention is to provide a locomotive that' shall be providedgwith guiding; trucks and drivingwheels so Vdisposed as to insure good running and tracking qualities and motors so idisposed vrelative to .the kdriving wheels as .to insure a high speed and a powerful driving torque. A

Another object of our invention is to pro'- vide l a klocomotive of the above-indicated character that shall be pro-vided with motors, having tandem-mounted armatures,r which are disposed substantially over thef driving Ywheels and areconnected byk rods,

the centerlines of whichintersect atl a common pointon Ithe center-line of the kside .rods which connect :the various driving wheels together. y

.. .Afurther object offour `invention is to provide a locomotive of the above-indicated character that shallA be provided withV a rod` connection-.between the propelling motors and the driving wheels,V which shallbe lightY .Y and simple` in structure and substantially free. from lateral vibrations and f romjeX- treme whipping stresses.v

More specifically, our inventionl Vembodies y alocomotivefhaving a cab andr two v articu-j lated-running gears. Each of the running `gears embodies'an-outer and an inner guid-v ing truck, and a, number ofvpairs of driving wheels disposed vbetween `the two guiding trucks. y-The drivingV wheels, arek intercon-v nectedby side rods,l and,.centrally located abovey the driving wheels, are two motors Which are connected by `rods to a central pointon the'side-rod system .which connects the various driving wheels. v Y

In the accompanying drawings, `Figure 1 LocoMo'rIvE.

Specification of' Letters Patent. Pattedoct.' 14, 17919, Y' Y Application filed December 14, 1916. Serial No. 136,877. i Y

is an ,elevationall view, lpartially inV section,

of, a locomotive constructed in accordance withour invention; Fig. 2 is a detail viewk illustrating the connecting means between the `cab and the ruiming gears of the loco` motive illustratedin Fig.,V l; Figs..V 3 and 4 tion 5. n The running gears 3V and 4fare similar inl construction, with `one exception which is pointed out iii detailk later, and, accordingly,v

only one running gear, namely, the running gear 3, will be described in detail. The running gear 3 Vembodies side frames 6, two pairs ofdriving wheels 7 andB, which are mounted on driving aXlesQ and 10, a pivotal guidingtruck 11 having two pairs of4 wheels 12 and13, and a-two-wheelfradial truck Q14. Thedriving wheels 7 and 8 have a rigid `wheel base, and the vguiding truck 11,'comprising the pairs ofV wheels 12 and `13,"is

la pivotal connection 15.

connectedto the side Vframes 6 means off shaft v22,- having crank disks 23 mounted Y tively mounted' on thedriving axles. 9 and 10, by means -of theside rods 28 and 29.

The means for connectingv the running gear 3 to the cab 2 embodies a link 30, hav-A ing a pivotalconnection 31 to a body bolster 32 of therunning gear, and apivotal conf thereon,-isdisposed between the two pairs l ioo nection 33 to the frame of the cab 2. The

link 30 permits the running gear 3 to effect a movement of rotation relative to the cab 2 but restrains 4the same from any lateral movement relative thereto. Intermediate the ends of the running gear` 3 and adjacent to the motors 16 and 17 are body bolsters 34 and 35, which have cylindrical surfaces 36 and 37 that have a center in the vertical central axis of the running gear. Coperating with the cylindrical'surfaces 36 and 37 are substantially-concentric surfaces 38 and 39 on' the frame of the cab 2, which permit the running gear 3 to have a movement of rotation relative to the cab but prevent the saine from having anylongitudinal movement relative thereto.

The ruiming gear 4: diifers from tlie running gear 3 in that the cylindrical surfaces 36 and 37 on the ruiming gear and the surfaces 38 and 39 on the cab are not in engagement with each other. A space is left between the above-inentioned surfaces on the ruiming gear and on the cab, so that, in case the articulated connection between the two running gears develops any lost motion, the torque developed by the locomotive will, in no case, be transmitted through the cab structure.

The connecting means between the cab and each ruiming gear, which permits cach running gear to have a movement of rotation, relative to the cab, about a center located substantially at the vertical central plane of the locomotive by means located substantially outside the vertical central.

plane of the locomotive, is completely disclosed and yillustrated in an application filed by G. M. Eaton, Serial No. 132091, filed Nov. 18, 1916, and assigned to the Westinghouse Electric & Manufacturing Company.

Each of the armature shafts 18 and 19 is provided with two tandem-mounted armatures l() and 11, as illustrated in Fig. 5 of the drawings.

In Fig. 3 of the drawings, triangularshaped connecting members 43 are provided for connecting the crank disks 20 and 21 of the motors 16. and 17 to the crank disks 23, which are mounted on the jack shaft 22. The jack shaft 22, which is illustrated in Figs. 1 and 3, is essentially designed to prevent any lateral vibration and to have a steadyiiig eect on the rods connected to the driving wheels 7 and 8 and the motors 16 and 17.

In Fig. a of the drawings, the triangularsliaped connecting members 43 are directly connected to the side rods 28 and 29, which connect the driving wheels 7 and 8, without the interposition of the jack shaft 22 and the crank disks 23, which are mounted thereon. Y

In Fig. G of the drawings, the ack shaft 22 is replaced by a pair of driving wheels 44, and side rods 28 and 29, which aie connected to the driving wheels 7 and 8, are pinned to a triangular-shaped member L5 which is connected to the driving wheels 44 by means of a scotch yoke 46.

Variations in the structure and arrangement and location of parts may be made without departing from the spirit and scope of our invention, and sucli modifications are intended to be covered in the appended claims.

IVe claim as our invention:

1. In a locomotive, the combination with a cab, of two articulated running gears pivotally associated with said cab, each of said ruiming gears comprising driving wheels and a two-wheel and a four-wheel truck having wheels of a less diameter than said driving wheels.

2. In a locomotive, the combination with a cab, of two articulated running gears, each of said ruiming gears comprising driving wheels mounted thereon, and a twowheel and a four-wheel guiding truck mounted adjacent to said driving wheels.

3. In a locomotive, the combination with a single cab, of two articulated running gears pivotally connected thereto, each of said ruiming gears comprising a radial and a pivotal guiding truck disposed at the respective ends of each ruiming gear, and driving wheels disposed between said guiding trucks.

4. In a locomotive, the combination with two articulated running gears each comprising a two-wheel radial and a four-wheel pivotal truck disposed at the respective ends of each running gear, of a single cab supported by said running gears, and pairs of driving wheels disposed between said trucks.

5. In a locomotive, the combination of two articulated running gears, each coniprising a two-wheel radial and a four-wheel pivotal truck disposed at the respective ends of each ruiming gear, pairs of driving wheels disposed between said trucks, said guiding trucks having wheels of a smaller diameter than said driving wheels, and a single cab supported by said running gears.

6. In a locomotive, the combination with a cab, of two articulated running gears for supporting said cab, each of said ruiming gears comprising a pivotal and a radial truck disposed at the respective ends of each ruiming gear, and two pairs of driving wheels disposed between said two trucks.

7. In a locomotive, the combination with a cab, of two articulated running gears for supporting said cab, each of said running gears comprising a four-wheel outer pivotal guiding truck, a two-wheel inner radial truck, and driving wheels disposed between said trucks. y

8. In a locomotive, the combination with a cab, of two articulated running gears, each of said running gears comprising two pairs of driving wheels, a two-wheel radial truck, and a four-wheel pivotal truck, said driving wheels having wheels larger in ,diameter than the diameter of the wheels on said pivotal and said radial truck.

9. In an electric locomotive for high-speed service, the combination with a truck frame, of two pairs of driving wheels associated with said frame,'a jack shaft having its ends projecting between said pairs of driving wheels, rods connecting the ends of the jack shaft `to the driving wheels, a pair of electric' motors for propelling said jack shaft, each of said motors comprising an armature shaft having two armatures tandem-mounted thereon, and rods connecting the ends of said armature shafts to said jack shaft and connecting rods. Y

lO. In a locomotive, the combination with a cab, of two articulated running gears for supporting said cab, each of said running gears comprising a plurality of pairs of driving wheels, motor shafts having armatures mounted in tandem thereon, and means comprising side rods for connecting said shafts to the driving Wheels. l

l1. In a locomotive, the combination with a cab, of two articulated running gears pivotally associated with rsaid cab, each of said running gears comprising driving wheels mounted thereon, motors having tandemmounted armatures connected to the driving wheels, and a two-wheel and a fourewheel guiding truck mounted adjacent to said driving wheels.

12. In a locomotive, the combination with a cab, of two articulated running gears for supporting said cab,y each of said running gears comprising two pairs of driving wheels, motors having tandem-mounted a1'- Copies of this patent may be obtained for l to said driving wheels.

matures connected to said driving wheels, and two guiding trucks mounted adjacent 13. In a locomotive, the combination with a.' cab, of two articulated running gears for, supporting said cab, each of said running `gears comprising two pairs of j driving wheels having a jack shaft mounted between them, motors having tandem-mounted armatures connected to said jack shaft, and side rods for connecting the jack shaft to the driving wheels. f

` 14:. In an electric locomotive for highspeed service, the combination with a single cab, of two running-gear units upon which the cab is mounted, each of said runninggear units comprising two pairs of driving wheels, a jack shaft located kbetween said a cab, of two articulated running gears con- -nected to said cab, each of said running gears comprising two pairs of driving@ wheels, a jack shaft located between the pairs of driving' wheels, side rods forconnecting the jack shaft to the driving wheels,

and motors located over the* drivingwheels and having tandem-mounted armatures connected to the jack shaft. f

In testimony whereof we have hereunto subscribed our names this 24th day of November, `1916.

GEORGE M. EATON. RUDOLF E. HELLMUND.

ve cents each by addressing the Commissioner of Iatentl, Washingtdil). c, v v Y n 

